396 KB0 KB197720261988Barle, JanezGrad, Janezletnik:12številka:4str. 39-43ISSN:0350-5596COBISSID_HOST:5115993URN:URN:NBN:SI:doc-JRSLUYBLenSlovene Society InformatikaInformatica (Ljubljana)Bellmanov princip optimalnostiBellman's principlecomputer programdinamično programiranjediscrete dynamic programmingdiskretno dinamično programiranjedynamic programmingforest exploitation programFORTRANmatematikamathematicsoperacijsko raziskovanjeoperations researchprogram vodenja gozdovračunalniški programrastna funkcijatree-growing functionComputer program for determining an optimum solution in long-term forest exploitation process|One can define the long-term forest exploitation process in different ways. Methods of operations research can be used succesfully for this purpose. A group of experts at the University of Ljubljana developed a specific tree-growing function and, based on that, prescribed a set of procedures, relations and states which could represent mathematical model for optimizing the forest exploitation process. The method was defined as a discrete dynamic programming process, based upon Bellman's principle. In this paper we briefly describe the model and computer program prototype for solving it. They both can easily be extended by introducing more complexity into them. The program was written by FORTRAN and tested on DEC-10 computerProces dolgoročnega izkoriščanja gozdov moremo opredeliti na več načinov. Primerne v ta namen so tudi metode operacijskaega raziskovanja. Skupina strokovnjakov Univerze v Ljubljani je za določitev matematičnega modela optimizacije postopka izkoriščanja gozdov razvila posebno rastno funkcijo in na temelju le-te definirala zaporedje potrebnih postopkov, relacij in postulatov. Metoda je bila definirana kot postopek, ki temelji na diskretnem dinamičnem programiranju. V članku zgoščeno opišemo prototip modela in računalniškega programa za njegovo rešitev. Model je možno razširiti z vgraditvijo nadaljnjih zahtev in pogojev. Program je bil napisan v programskem jeziku fortran in je bil testiran na računalniku DEC-10TEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaSlovensko društvo Informatika